AU722008B2 - Drive device for a front-loading washing machine - Google Patents
Drive device for a front-loading washing machine Download PDFInfo
- Publication number
- AU722008B2 AU722008B2 AU74259/96A AU7425996A AU722008B2 AU 722008 B2 AU722008 B2 AU 722008B2 AU 74259/96 A AU74259/96 A AU 74259/96A AU 7425996 A AU7425996 A AU 7425996A AU 722008 B2 AU722008 B2 AU 722008B2
- Authority
- AU
- Australia
- Prior art keywords
- drive device
- stator
- liquid container
- washing liquid
- bearing sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000005406 washing Methods 0.000 title claims description 53
- 239000007788 liquid Substances 0.000 claims description 34
- 238000004804 winding Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 5
- 241000239290 Araneae Species 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Brushless Motors (AREA)
Description
S F Ref: 358420
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
ORIGINAL
!SS.S
Name and Address of Applicant: Actual Inventor(s): Address for Service: Invention Title: Bosch-Siemens Hausgerate GmbH Hochstrasse 17 D-81669 Munchen
GERMANY
Wolfgang Neumann Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Drive Device for a Front-Loading Washing Machine The following statement is a full description of this Invention, including the best method of performing it known to me/us:- 5845 1 Drive device for a front-loading washing machine The invention concerns a drive device for a front-loading washing machine with a laundry drum which is borne overhung by way of an at least nearly horizontal shaft within a bearing sleeve of a stiff carrier part mounted at the rear wall of a washing liquid s container and which is driven directly by a flat motor likewise mounted at the rear wall of the washing liquid container.
Such a drive device is known from the DE 39 27 426 Al. In this, the stator of the flat motor constructed as collectorless external rotor direct current motor is fastened directly on the bearing sleeve of the stiff carrier part. The shaft is borne in the bearing sleeve and its outer end connected with the rotor of the flat motor to be secure against relative rotation. The rotor is here a so-called external rotor which as pot engages over the stator windings and carries poles constructed as permanent magnets.
The known drive device is not deliverable as already assembled motor to the manufacturing works of washing machine. Its stator and its rotor must be supplied Is separately and assembled together only in the washing machine works. Since no special assembly equipments for the completion of motor assemblies are as a rule present in a washing machine works and also not desired, the completion of the stator assembly to be connected initially with the washing liquid container system by the external rotor i °assembly can regularly take place only inaccurately. Since extremely high demands are made on the maintenance of a small airgap which as far as possible is always equally great for each specimen, between the stator windings and the rotor poles as well as on the centred bearing, which demands cannot be fulfilled in the case of the aforementioned assembly in a washing machine factory, the known drive device is practically not usable.
~It is desirable to provide a drive device that can be assembled without risk of 25 impermissible inaccuracies in the works of the washing machine manufacturer and that it can be mounted at the system as sieve carrier part in place of a cast spider with the washing liquid container system largely unchanged.
It is the object of the present invention to substantially overcome or at least oooi ameliorate one or more of the above disadvantages.
Accordingly, the present invention provides a drive device for a front-loading washing machine having a washing liquid container and a laundry drum, said laundry drum being mounted by way of a substantially horizontal shaft within a bearing sleeve of a stiff carrier part, said stiff carrier part being mounted at a rear wall of said washing [R:LIBLL]09470 doc:MFF liquid container and said shaft being driven directly by a flat motor mounted at said rear wall of said washing liquid container, said flat motor having a rotor and stator; wherein said stator is connected to said stiff carrier part, said stator having a disc-shaped chamber and said rotor being rotationally secured by means of a hub to an end of said shaft extending from the rear of said bearing sleeve, said hub being rotatable by way of rolling bearings between said hub and either said stiff carrier part or said stator.
In a preferred embodiment, the motor can be assembled and tested completely in the manufacturing works of the motor suppliers. There, the assembly aids suitable for this are available so that always equally accurately assembled motor assemblies can be io supplied to the washing machine works. In a preferred embodiment, this assembly can be mounted to the rear wall of the washing liquid container system in place of the cast carrying spider usual at this place. For this purpose, the stator is preferably fastened by means of several screws in any desired places of the rear wall of the washing liquid container. Preferably, the shaft of the laundry drum is then plugged into the hub of the rotor, which is already connected with the stator by way of the rolling bearings, and secured by a central screw. These working steps are extremely similar to those of the fastening of a carrying spider and a belt pulley according to the hitherto usual washing machine constructions so that no completely different working steps have to be learned by S- b the assembly personnel.
0 20 In a preferred embodiment, the drive device advantageously replaces almost all :otherwise usual equipments of a washing machine drive. These are a hitherto usual motor 000: mounted at the washing liquid container by means of special fastening means, a cast-iron carrying spider for the washing liquid container, rubber, buffers between it and the washing liquid container, a belt pulley, a belt and a pinion.
The washing machine according to the invention may preferably be developed S.further in particularly advantageous manner in that the stator is constructed in two dishes and comprises a rear cover dish with one part of the bearing sleeve as well as a front mounting dish with a second part of the bearing sleeve, that a plurality of stator windings are distributed uniformly within the disc-shaped chamber at the inward casing surface of an outer encircling flange of the front mounting dish and that the disc-shaped chamber is closed from the rear by the cover dish screwed together repeatedly with the flange.
Preferably, the stator has a large diameter and many uniformly distributed, electronically commutable windings which permit an extremely great rotational speed spread for the A 5 rotor and on the one hand give it a quiet running and on the other hand provide a very 1 great torque at any rotational speed.
[R:\LIBLL]09470.doc:MFF A further advantageous development of a preferred embodiment, in which the front mounting dish at the outer casing surface of its flange displays approximately uniformly distributed screw holes for connection with the washing liquid container, leads to a completely similar connection of the motor with the washing liquid container as for a carrying spider. Therefore, the washing liquid container need experience no change at this place.
When the mounting dish of a preferred embodiment of the drive device includes screw holes, which are distributed over a notional circle around the bearing sleeve, for connection with parts of the washing liquid container, a structuring of the washing liquid container, which agrees with that already present for the assembly with a carrying spider, can be maintained also at this place.
In a preferred embodiment, the cover shell may not be so structured that it permits a direct access to the screws of the notional circle, in which case the rotor and the cover dish display assembly holes distributed over the notional circle around the bearing sleeve.
Preferred forms of the present invention will now be described by way of example only with reference to the accompanying drawings, wherein: Fig. 1 a schematic illustration of a washing liquid container of a washing ol machine with a horizontally borne internal laundry drum, the drive shaft of which is 20 plugged into the rotor of a flat motor according to the invention and Fig. 2 an enlarged detail view, illustrated partly in section, of the flat motor, 0 which is mounted at the rear wall, according to Fig. 1.
The washing liquid container 1 is borne oscillatorily in not more closely illustrated manner in a likewise not illustrated housing of a oo 0* g* a• a oo a 9 [R:\LIBLL]09470.doc:MFF -4- Wiashing machine. At its front wall 2, it has an opening 3 for the loading and unloading of the laundry drum 4, which is borne to be rotatable on the horizontal axle 5 in the rear wall 6 of the washing liquid container 1. Serving for this is the shaft 7, which is connected at the rear wall 8 of the laundry drum 4 to be rotationally secure therewith.
A flat motor 9, the stator housing 10 of which is connected to be rotationally secure with the rear wall 6, is mounted at the rear wall 6 of the washing liquid container 1. Several stator windings 12 are uniformly distributed at the inward casing surface of the flange 11 of the stator. housing 10 and correspond during the rotation of the rotor 13 in alternation with its poles 14, which can likewise consist of (here however short-circuited) windings or of permanent magnets.
Thereby, the flat motor can introduce its driving moments directly by way of the shaft spigot 7 into the laundry drum 4. In that case, the stator of the flat motor also takes up all bearing forces.
According to Fig. 2, the rear wall 8 of the laundry drum 4 is stiffened by a carrying spider 15, the hub 16 of which is connected with a shaft spigot 7 to be secure against relative rotation. At the S rear wall 6 of the washing liquid container 1, the mounting dish 7 of the stator housing 10 is furthermore screwed on to be rotationally secure (captive screws 18). In order that a washing machine fitter in the manufacturing works for washing machine can mount the already completely assembled motor at the rear wall of the washing liquid q container, an equal number. of access holes 33 and 34 is arranged in the rotor disc 13 and in the cover dish 22 on the notional circle of the distribution of the screws 18, wherein the holes 34 in the cover dish are also in alignment with the screws 18. Beyond that, the flange 11 of the stator housing 10 at its outward side carries several, preferably three, fastening eyes 19, which are arranged distributed around the circumference of the washing liquid container 1 and which by means of screws 20 additionally by way of straps 21 welded to the washing liquid container 1 yield a firm connection with the washing liquid container. Thestator housing 10 is completed by the 3! rearward cover dish 22, which is screwed at uniform spacing to the rearward end face of the flange 11.
The central bores of the assembly dish 17 and the cover dish 22 form bearing seats 31 and 32 for rolling bearings 23 and 24, the inner rings of which sit in press-fit on the hub 25 of the rotor 13. The shaft spigot 7 is plugged with a good fit into this hub 25 and secured S at the outer end by means of a pressure washer 26 and a central screw 27 by way of the inner ring of the rolling bearing 24 to be secure against rotation. In that case, a spacer ring 28, which is polished on its outward side, is pressed in between the hub 16 of the carrying spider 15 of the laundry drum 4 and the hub 25 of the rotor 13. A sealing ring 29, the sealing lips of which at the shaft side are retained by means of a spring ring on the polished outward side of the spacer ring 28, is connected with a step of the central bore of the assembly dish 17. Its sealing lips facing the rear wall 6 of the S. :washing liquid container 1 are laid by axial pressure against a to 6 likewise polished annular surface 30 of the metal plate of the rear wall. Thereby, washing liquid endeavouring to get out of the washing liquid container is prevented from issuing.
0 9.
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*WOOD
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Claims (3)
1. A drive device for a front-loading washing machine having a washing liquid container and a laundry drum, said laundry drum being mounted by way of a substantially horizontal shaft within a bearing sleeve of a stiff carrier part, said stiff carrier part being mounted at a rear wall of said washing liquid container and said shaft being driven directly by a flat motor mounted at said rear wall of said washing liquid container, said flat motor having a rotor and stator; wherein said stator is connected to said stiff carrier part, said stator having a disc-shaped chamber and said rotor being rotationally secured by means of a hub to an lo end of said shaft extending from the rear of said bearing sleeve, said hub being rotatable by way of rolling bearings between said hub and either said stiff carrier part or said stator.
2. The drive device according to claim 1, wherein said stator comprises a rear cover dish providing a first part of said bearing sleeve and a front mounting dish providing a second part of said bearing sleeve, said front mounting dish having an outer Is encircling flange with inward and outward casing surfaces and wherein a plurality of stator windings are distributed uniformly within said disc-shaped chamber at said inward casing surface, said disc-shaped chamber being closed by means of said cover dish being o o affixed by screws to said flange. The drive device according to claim 1 or 2, wherein said front mounting to 20 dish at said outward casing surface is provided with generally uniformly distributed screw holes for connection with the washing liquid container. S4. The drive device according to any one of the claims 1 to 3, wherein said front mounting dish is provided with screw holes which are distributed over a notional circle around said bearing sleeve for connection with said washing liquid container. ooo g 25 5. The drive device according to claim 4, wherein said rotor and said rear Z-oo. cover dish are provided with access holes distributed over said notional circle around said bearing sleeve.
6. A drive device for a front-loading washing machine, said device being to substantially as hereinbefore described with reference to the accompanying drawings. Dated 15 May, 2000 Bosch-Siemens Housgerate GmbH Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON [R:LIBLL]09470,doc:MFF
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19546185 | 1995-12-11 | ||
| DE19546185A DE19546185B4 (en) | 1995-12-11 | 1995-12-11 | Drive device for a front-loadable washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU7425996A AU7425996A (en) | 1997-06-19 |
| AU722008B2 true AU722008B2 (en) | 2000-07-20 |
Family
ID=7779793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU74259/96A Ceased AU722008B2 (en) | 1995-12-11 | 1996-12-10 | Drive device for a front-loading washing machine |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5809809A (en) |
| EP (1) | EP0779388A3 (en) |
| JP (1) | JPH09182368A (en) |
| KR (1) | KR100489954B1 (en) |
| CN (1) | CN1105207C (en) |
| AU (1) | AU722008B2 (en) |
| BR (1) | BR9605953A (en) |
| DE (1) | DE19546185B4 (en) |
| NZ (1) | NZ299774A (en) |
| TR (1) | TR199600968A2 (en) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19724475B4 (en) * | 1997-06-10 | 2010-08-05 | BSH Bosch und Siemens Hausgeräte GmbH | Drive device for a front-loadable washing machine |
| DE19724930A1 (en) * | 1997-06-12 | 1998-12-17 | Bosch Siemens Hausgeraete | Drive device for a washing machine |
| DE19726246A1 (en) * | 1997-06-20 | 1998-12-24 | Bosch Siemens Hausgeraete | Drive device for a washing machine |
| JPH1128298A (en) * | 1997-07-11 | 1999-02-02 | Toshiba Corp | Drum type washing machine |
| DE19755537A1 (en) * | 1997-12-13 | 1999-06-17 | Fhp Motors Gmbh | Transport safety mechanism for assembled and justified motor kit brushless DC motor, e.g for washing machines |
| DE19819410A1 (en) * | 1998-04-30 | 1999-12-30 | Miele & Cie | Method for producing a laundry treatment device or for mounting a drive motor in such a laundry treatment device |
| DE19859567A1 (en) * | 1998-12-22 | 2000-06-29 | Bsh Bosch Siemens Hausgeraete | Drive device for a washing machine that can be loaded from the front |
| KR100415024B1 (en) | 1999-03-10 | 2004-01-13 | 가부시끼가이샤 도시바 | Drum type washing machine |
| DE19922611A1 (en) * | 1999-05-17 | 2000-11-23 | Bsh Bosch Siemens Hausgeraete | Drive unit for a washing machine comprises a rigid carrier, a bearing sleeve, a horizontal shaft, a motor, and a bearing connection. |
| DE19922610A1 (en) * | 1999-05-17 | 2000-11-23 | Bsh Bosch Siemens Hausgeraete | Drive unit for a washing machine, comprises a nearly horizontal shaft with a washing drum, a flat electric motor with a rotor and a stator, and a hollow shaft member. |
| TW472094B (en) * | 1999-05-19 | 2002-01-11 | Toshiba Corp | Rolling drum type washing machine |
| AU782017B2 (en) * | 1999-10-18 | 2005-06-30 | Lg Electronics Inc. | A driving unit for a drum type washing machine |
| AU753411B2 (en) * | 1999-10-19 | 2002-10-17 | Lg Electronics Inc. | Structure of driving unit in drum type washing machine |
| US7997103B2 (en) | 2002-12-10 | 2011-08-16 | Lg Electronics Inc. | Tub having structurally strengthened rear wall and washing machine with the same therein |
| PT1428924E (en) * | 2002-12-10 | 2008-03-31 | Lg Electronics Inc | Drum type washing machine |
| CN100398727C (en) * | 2002-12-17 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Tub tray connection structure for drum washing machine |
| KR100464054B1 (en) | 2002-12-27 | 2005-01-03 | 엘지전자 주식회사 | Drum type washing machine with united cabinet/tub |
| US8256246B2 (en) * | 2003-10-29 | 2012-09-04 | Miele & Cie. Kg. | Aggregate for a washing machine with a plastic sudsing container |
| KR100595192B1 (en) * | 2003-11-06 | 2006-06-30 | 엘지전자 주식회사 | structure of driving unit in drum-type washing machine |
| KR20050119269A (en) * | 2004-06-16 | 2005-12-21 | 삼성전자주식회사 | Drum type washing machine |
| KR100634802B1 (en) * | 2004-07-20 | 2006-10-16 | 엘지전자 주식회사 | Drum washing machine |
| US7342334B2 (en) * | 2004-10-29 | 2008-03-11 | Emerson Electric Co. | Insulated stator with wire routing element |
| KR101141638B1 (en) * | 2004-11-11 | 2012-05-04 | 엘지전자 주식회사 | direct drive motor in washing machine |
| KR101022222B1 (en) * | 2004-11-17 | 2011-03-17 | 삼성전자주식회사 | Washing machine |
| JP5097491B2 (en) * | 2007-09-25 | 2012-12-12 | 日立アプライアンス株式会社 | Washing machine drive motor |
| JP4866820B2 (en) * | 2007-09-25 | 2012-02-01 | 日立アプライアンス株式会社 | Drum washing machine |
| PL2119819T3 (en) | 2008-05-14 | 2013-08-30 | Whirlpool Co | Washing machine with a direct drive system |
| KR101090104B1 (en) * | 2008-12-23 | 2011-12-07 | 주식회사 아모텍 | Integrated Cover-Structured Stator |
| US8405268B2 (en) | 2010-02-18 | 2013-03-26 | Nidec Motor Corporation | Stator with monolithic mounting bosses and assembly comprising the same |
| KR102252508B1 (en) | 2015-01-05 | 2021-05-14 | 엘지전자 주식회사 | laundry machine |
| DE202015101403U1 (en) | 2015-03-19 | 2015-03-26 | Antonio Chiriatti | Machine for washing clothes or drying clothes |
| EP3469693A4 (en) * | 2016-06-10 | 2019-12-25 | Fisher&Paykel Appliances Limited | Direct-drive electric motor arrangement |
| CN109790675A (en) * | 2016-09-08 | 2019-05-21 | 菲舍尔和佩克尔应用有限公司 | Electric appliance direct-driving motor mounting device |
| CN111106698A (en) * | 2018-10-29 | 2020-05-05 | 日本电产株式会社 | Motor and reduction gear |
| US11346032B2 (en) * | 2019-11-11 | 2022-05-31 | Haier Us Appliance Solutions, Inc. | Washing machine appliance and motor assembly therefor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE944157C (en) * | 1945-01-04 | 1956-06-07 | Siemens Ag | Swing arrangement |
| NL291769A (en) * | 1962-04-19 | |||
| FR1340648A (en) * | 1962-12-05 | 1963-10-18 | Intertecnica S R L | Improvements to automatic washing machines of the household type |
| US3254545A (en) * | 1963-10-08 | 1966-06-07 | Fichtel & Sachs Ag | Dual-speed transmission for a washing machine |
| FR1555088A (en) * | 1967-09-29 | 1969-01-24 | ||
| DE3708976A1 (en) * | 1987-03-19 | 1988-10-06 | Faini Spa | BULL-EYE WASHING MACHINE |
| US4998052A (en) * | 1989-07-28 | 1991-03-05 | General Electric Company | Gearless direct drive switched reluctance motor for laundry application |
| DE3927426B4 (en) * | 1989-08-19 | 2006-02-23 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Drive unit for a laundry treatment machine |
-
1995
- 1995-12-11 DE DE19546185A patent/DE19546185B4/en not_active Expired - Lifetime
-
1996
- 1996-11-08 EP EP96117974A patent/EP0779388A3/en not_active Withdrawn
- 1996-11-18 NZ NZ299774A patent/NZ299774A/en unknown
- 1996-12-05 TR TR96/00968A patent/TR199600968A2/en unknown
- 1996-12-10 AU AU74259/96A patent/AU722008B2/en not_active Ceased
- 1996-12-11 CN CN96119758A patent/CN1105207C/en not_active Expired - Lifetime
- 1996-12-11 KR KR1019960064291A patent/KR100489954B1/en not_active IP Right Cessation
- 1996-12-11 JP JP8330922A patent/JPH09182368A/en active Pending
- 1996-12-11 BR BR9605953A patent/BR9605953A/en not_active IP Right Cessation
- 1996-12-11 US US08/763,902 patent/US5809809A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1105207C (en) | 2003-04-09 |
| KR970043516A (en) | 1997-07-26 |
| BR9605953A (en) | 1998-08-18 |
| DE19546185B4 (en) | 2010-07-01 |
| EP0779388A2 (en) | 1997-06-18 |
| AU7425996A (en) | 1997-06-19 |
| TR199600968A2 (en) | 1997-06-21 |
| US5809809A (en) | 1998-09-22 |
| JPH09182368A (en) | 1997-07-11 |
| KR100489954B1 (en) | 2005-08-23 |
| NZ299774A (en) | 1997-12-19 |
| TR199600968A3 (en) | 1997-06-23 |
| CN1158372A (en) | 1997-09-03 |
| DE19546185A1 (en) | 1997-06-12 |
| EP0779388A3 (en) | 1998-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |